"After some time, all enemies stop attacking and get stuck plotting move, I'm not sure what causes this but it seems to occur after the grove party."
I also meet this bug. This one is quite serious because it makes all fights meaningless, since all enemies stop attacking or moving, they just wait a few seconds then pass the round. But for me it didn't occur after the grove party, it occured when the first time my team entered the Goblin camp and fight with the gate guards, since then every enemies had this problem!
Same here. First encountered when in goblin camp trying to kill Halsin during an evil playthrough. From then on, no NPC ever took an action during combat. After I cleared the grove, Minthara dissapeared (may or may not be a related bug). End of playthrough.
